Edit - I am wrong about the below, CatGenie corrected me.
I would say no
, the CatGenie should not
drain into a septic system.
It uses an anti bacterial agent in the Sani Solution. (I am not 100% certain, but I believe it's a "Quat"
Septic systems rely on organic waste degrading anaerobic bacteria to work properly. The Sani Solution will harm the waste degrading bacteria population inside your septic tank.